From: marvin greenlee (marvin@ccbootcamp.com)
Date: Thu Dec 23 2004 - 14:32:43 GMT-3
In general, the easiest way to remember is based on the OSI layer of the
device. If you are changing layers, you can use a straight cable. If the
layers are the same, you would use a crossover cable.
Router (layer 3) to PC (layer 3) - crossover
Router (layer 3) to switch (layer 2) - straight
Switch (layer 2) to switch (layer 2) - crossover
Etc.
One possible area of confusion with this general rule is the case of a
multilayer switch like the 3550. If you are connecting a router to the
switch, you would use a straight cable, even if the switchport is configured
as a layer 3 port.
- Marvin Greenlee, CCIE#12237, CCSI# 30483
Network Learning Inc
marvin@ccbootcamp.com
www.ccbootcamp.com (Cisco Training)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
cejackson1@comcast.net
Sent: Thursday, December 23, 2004 9:05 AM
To: ccielab@groupstudy.com
Subject: Cables types [bcc][faked-from]
Importance: Low
Does anyone know a good website or reference quide when using cross-over
versus straight-thru cables. Example router to switch = straight thru,
switch to switch cross-over.......hub to switch...
thanks
Cecil
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